K R A ME R E LE CT R O N IC S L TD .
Contents 1 Introduction 1 2 2.1 2.2 2.
1 Introduction Welcome to Kramer Electronics! Since 1981, Kramer Electronics has been providing a world of unique, creative, and affordable solutions to the vast range of problems that confront the video, audio, presentation, and broadcasting professional on a daily basis.
2 Getting Started We recommend that you: Unpack the equipment carefully and save the original box and packaging materials for possible future shipment Review the contents of this user manual i 2.1 Go to http://www.kramerelectronics.com/support/product_downloads.asp to check for up-to-date user manuals, application programs, and to check if firmware upgrades are available (where appropriate).
2.2 Safety Instructions ! 2.3 Caution: There are no operator serviceable parts inside the unit Warning: Use only the power cord that is supplied with the unit Warning: Do not open the unit.
3 Overview The VM-1021N is a high-performance distribution amplifier for composite or SDI video signals. It provides controls to compensate for signal losses inherent in long cable runs. The VM-1021N is a full broadcast, state-of-the-art, 1:20 video distribution amplifier designed for studio and other demanding applications. The unit splits a single input source into twenty identical outputs with no discernible signal degradation.
VM-1021N – Overview Figure 1: VM-1021N 1:20 Video Distributor Front Panel # Feature Function 1 POWER LED Illuminates when the device is turned on 2 SET 4 ADJUST EQ Trimmer Controls cable equalization of SET 4 video outputs 16-20 3 SET 4 ADJUST LEVEL Trimmer Controls level of SET 4 video outputs 16-20 4 SET 3 ADJUST EQ Trimmer Controls cable equalization of SET 3 video outputs 11-15 5 SET 3 ADJUST LEVEL Trimmer Controls level of SET 3 video outputs 11-15 6 SET 2 ADJUST EQ Trimmer Controls
6 Figure 2: VM-1021N 1:20 Video Distributor Rear Panel # VM-1021N – Overview 6 10 Feature INPUT BNC Connector Function Connects to a composite/component/ analog sync video source 11 LOOP BNC Connector Selects “75Ω“ or “HI-z” impedance when pressed (for looping select "Hi-z") 12 IN=75Ω Button Provides video looping capability to increase number of outputs 13 OUT SET 1 BNC Connectors (1-5) SET 1 of 5 amplified buffered and clamped video outputs 1-5 14 OUT SET 2 BNC Connectors (6-10) SET 2 of 5
4 Installing in a Rack This section provides instructions for rack mounting the unit.
5 Connecting the VM-1021N i Always switch off the power to each device before connecting it to your VM-1021N. After connecting your VM-1021N, connect its power and then switch on the power to each device. To connect the VM-1021N as illustrated in the example in Figure 3: 1. Connect a video source to the INPUT BNC connector (for example, a composite video player). 2. Connect the OUT SET BNC connectors to up to 20 video acceptors, 4 sets of 5 devices (for example, composite video displays with speakers).
Note: Terminate unused inputs to 75Ω, and terminate active inputs at the connecting source The output signal format must match the input signal format (for example, if the input is composite, the output is composite) All signal cables to each device should be of equal length (for example, the R,G,B cables between a camera and the amplifier should be of equal length) VM-1021N - Connecting the VM-1021N 9
6 VM-1021N Technical Specifications INPUT: 1 composite video or a single component, looping, 1Vpp/75Ω on BNC connectors with termination switch OUTPUTS: 20 composite/component video, 1Vpp/75Ω on BNC connectors VIDEO BANDWIDTH(-3dB): 350MHz DIFF. GAIN: 0.1% DIFF. PHASE: 0.07Deg K-FACTOR: <0.05% VIDEO S/N RATIO: 74dB CONTROL: Level: -1.1dB to + 2.7dB; EQ.: 0 to 2.9dB @4.4MHz NON-LINEARITY: 0.1% COUPLING: DC POWER SOURCE: 100-240V AC, 50/60Hz, 6.
For the latest information on our products and a list of Kramer distributors, visit our Web site where updates to this user manual may be found. We welcome your questions, comments, and feedback. Web site: www.kramerelectronics.com E-mail: info@kramerel.
